A5003674163- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Genetic diversity and population structure
- Scottish History and National Identity
- Parasite Biology and Host Interactions
- Social Sciences and Governance
- Aquaculture disease management and microbiota
- Aquatic Invertebrate Ecology and Behavior
- Hydrology and Sediment Transport Processes
- Environmental DNA in Biodiversity Studies
- Wildlife Ecology and Conservation
- Fish biology, ecology, and behavior
- Myxozoan Parasites in Aquatic Species
- Reproductive biology and impacts on aquatic species
- Marine and fisheries research
- Mercury impact and mitigation studies
- Underwater Vehicles and Communication Systems
- Isotope Analysis in Ecology
Marine Institute
2019-2023
University College Cork
2020-2023
Abstract This paper reviews the life history of brown trout and factors influencing decisions to migrate. Decisions that maximize fitness appear dependent on size at age. In partly anadromous populations, individuals attain maturity parr stage typically become freshwater resident. For individual fish, is not genetically fixed can be modified by previous growth energetic state in early life. phenotypic plasticity may influenced epigenetic modifications genome. Thus, survival determine...
Abstract Genetic identity analysis and PIT (passive integrated transponder) tagging were used to examine the freshwater return rates phenotypic characteristics of n = 1791 downstream migrating juvenile Salmo trutta in Burrishoole catchment (northwest Ireland) across period September 2017 December 2020. In this system, juveniles out‐migrate (move from into brackish or marine habitats) every month year, with distinct seasonal peaks spring (March through June; mostly silvered smolts) autumn...
Abstract The degree of natal philopatry relative to dispersal in animal populations has important demographic and genetic consequences often varies substantially within species. In salmonid fishes, lakes have been shown a strong influence on gene flow catchments; for example, spawning inflow streams are reproductively isolated genetically distinct from those relatively distant outflow streams. Less is known, however, regarding the level differentiation occurring at microgeographic scales,...
Animals often exhibit extensive flexibility in movement behaviours on a range of temporal and spatial scales response to cues that reliably predict fitness outcomes. The annual timing movements between distinct habitats can be crucial, particularly seasonal environments with narrow ecological windows opportunity. In polygamous species, sexual selection may further shape sex-specific phenology behaviours. Here, we characterized seasonal, daily diel patterns adult brown trout, Salmo trutta,...
Non-invasive methods are needed to enable indirect observation of vulnerable migratory fish populations across their life cycle and spatial distribution. Microchemistry data, such as trace element (TE) concentrations, collected non-invasively from the biomineral in scales can be used characterize history (habitat usage, provenance). However, generally underutilized microchemistry studies, due conflicting evidence regarding temporal stability composition. Some studies have found TE...
Abstract Pass‐through PIT antennae are often used in river and stream habitats to monitor the movement of aquatic species. Where these prone high flows that contain suspended debris, traditional pass‐through designs particularly vulnerable damage, which can be time consuming expensive repair lead extended gaps data collection. We designed tested a novel half duplex (HDX) antenna system allows loop (1) break away from one bank under predetermined strain (2) split into two separate cables,...
Migratory species must cope with different parasite communities in environments, but little is known about the ecophysiological effects of parasites on migratory performance. Some species/strains acanthocephalan genus Pomphorhynchus use anadromous salmonids as preferred definitive hosts, perforating intestines, destroying mucosa and inducing inflammation–all which might affect osmoregulatory function during transition between freshwater marine environments. We used genetic barcoding to...
Peatlands are being degraded by the combined impacts of land use and climate change. Carbon stored in peat is a key constituent aquatic food webs rivers lakes humic catchments, changes downstream transport this allochthonous carbon may have considerable implications for production Atlantic salmon brown trout. Understanding web these keystone species therefore crucial to their conservation changing world. Here, we combination stomach content analysis (SCA) stable isotope (SIA) characterise...